Slushing oil or rust inhibiting compositions

ABSTRACT

Slushing oil: A. METAL SULFONATE; B. ALIPHATIC CARBOXYLIC ACID AND POLYMERS THEREOF; C. COSOLVENT SELECTED FROM AROMATIC HYDROCARBONS, METHYL PYRROLIDONE, TETRAHYDROFURAN, AND MONO AND DIALKYL ETHERS OF ALKYLENE GLYCOLS AND MIXTURES THEREOF; D. MINERAL LUBRICATING OIL.

United States Patent [1 1 Krupin et al.

[4 1 Dec. 31, 1974 1 SLUSI-IING OIL OR RUST INHIBITING COMPOSITIONS [75] Inventors: Fred Krupin, New York, N.Y.; John P. G. Beiswanger, Audubon; Assadullah Nassry, Bethlehem, both of Pa.

[73] Assignee: GAF Corporation, New York, NY.

[22] Filed: Oct. 27, 1970 [21] Appl. No.: 84,540

[52] US. Cl 252/33.4, 252/51.5 A, 252/52 A, 252/52 R, 252/56 R [51] Int. Cl. Cl0m 1/40, ClOm 1/32 [58] Field of Search..... 252/33, 51.5 'A, 56 R, 52 R, 252/33.4, 52 A, 389

[56] References Cited UNITED STATES PATENTS 2,481,372 9/1949 Fuchs et a1. 242/33.4 2,624,708 1/1953 Langer et al 252/33.4 2,631,979 3/1953 McDermott 252/33.4

2,632,694 3/1953 Watkins 252/33.4

2,632,695 3/1953 Landis et a1. 252/334 2,671,758 3/1954 Vinograd et a1. 252/33.4

Benbury et a1. 252/33.4 Waugh 252/33.4 Beiswanger et a1 252/33.4

McMillen 252/33.4

FOREIGN PATENTS OR APPLICATIONS Canada.-. 252/33.4

Primary Examiner-Daniel E. Wyman Assistant Examiner-I. Vaughn Attorney, Agent, or FirmWalter C. Kehm; Samson B.

Leavitt Slushing oil: I

a. metal sulfonate;

ABSTRACT mixtures thereof;

(1. mineral lubricating oil.

19 Claims, No Drawings SLUSHING OIL OR RUST INHIBITINO COMPOSITIONS The present invention is directed toward a novel rust inhibiting composition and, more particularly, to a combination of rust inhibitors in a suitable lubricating medium, wherein the slushing oil so provided has enhanced rust inhibiting characteristics due to the presence of a metal salt of a mahogany or naphthalene sulfonic acid and a higher fatty acid of 1560 carbon atoms.

Because of the tendency of iron objects to rust when exposed to weather, many attempts have been made to provide rust inhibiting compositions which, when applied as a coating, will have the effect of preventing the formation of rust over extended periods of time. Generally, the coating of a rust inhibiting paint has been applicable where the iron object is stationary and, accordingly, not subject to wear, etc., as would be the case if the iron object was part of a moving mechanism. Therefore, in such environment, wherein the object is stationary, a thick rust inhibiting coating of paint is generally capable of preventing rust over extended periods of time.

It should be obvious, however, that such thick coatings of paint are not applicable wherein movement of the iron object causes wear and abrasion. In such cases, it is necessary to employ some sort of coating which will not lose its rust inhibiting effectiveness upon frictional contact. Therefore, a coating of some sort which acts both as a lubricant and as a rust inhibitor is highly desirable. While this is true, only a very limited number of compositions having the aforedescribed characteristics has been developed prior to the present invention.

One such composition which is extremely effective as a rust inhibitor and which can be effectively utilized in those environments wherein the iron object to be protected is subjected to wear and abrasion is disclosed in copending application, Ser. No. 20,844 filed Mar. 18, 1970, in the names'of John P. G. Beiswanger and Assadullah Nassry and now abandoned. Such application discloses a rust inhibiting composition comprising in combination a metal salt of a phosphate ester or a mixture of phosphate esters, plus an aliphatic carboxylic acid of -60 carbon atoms, e.g., a dimer acid. In accordance with the present invention, however, it has been found that a further combination of a metal salt of a mahogany or naphthalene sulfonic acid and a higher aliphatic carboxylic acid, e.g., dimer acid, in a lubricating oil medium in the presence of a cosolvent provides further enhanced rust inhibition characteristics and such composition is eminently suitable for the inhibiting of rust of iron objects subject to wear and abrasion.

Accordingly, it is a principal object of the present invention to provide a rust inhibiting composition which is unexpectedly superior to previous compositions and which can be advantageously utilized in those environments wherein movement of an iron object tends to cause wear and abrasion.

It is a further object of the present invention to pro vide such a rust inhibiting composition in the form of a slushing fluid or oil wherein the same contains a metal salt of a mahogany or naphthalene sulfonic acid and a higher aliphatic carboxylic acid of 15-60 carbon atoms.

It is yet a further object of the present invention to provide such a slushing oil comprising a metal salt of a mahogany or naphthalene sulfonic acid, a higher aliphatic carboxylic acid, e.g., dimer acid, a cosolvent therefor, and a paraffinic or naphthenic lubricating oil.

Still further objects and advantages of the novel rust inhibiting compositions of the present invention will become more apparent from the following more detailed description thereof.

The foregoing objects and advantages of the present invention are achieved by the utilization ofa combination of components comprising (a) metal salts of mahogany or naphthalene sulfonic acids, and (b) a higher aliphatic carboxylic acid of l5-60 carbon atoms, e.g., dimer acids.

Such a combination of components providing enhanced rust inhibiting characteristics is generally employed in combination with (c) a cosolvent for the sulfonate and aliphatic carboxylic acid, and (d) a lubricating oil, e.g., paraffinic or napthenic lubricating oil.

As indicated above, such a combination of components is effective for preventing the corrosion due to rusting of materials containing iron. In addition, due to the fact that the composition possesses both lubricating and rust inhibiting characteristics, the compositions of the present invention in the form of slushing oils or fluids are particularly adapted for the rust prevention of iron objects subjected to movement generally causing wear and abrasion. It is within this environment that the compositions of the present invention provide for objects and advantages not obtainable with conventional rust inhibiting paints.

METAL SALT OF MAHOGANY OR NAPHTHALENE SULFONIC ACID As indicated above, a primary component of the slushing oil or fluid of the present invention comprises a metal salt of a mahogany sulfonic acid or naphthalene sulfonic acid. Such metal salts of mahogany or naphthalene sulfonic acids are materials which are well any sulfonic acid or mahogany sulfonate is meant to embrace any and all of the aforedescribed oil-soluble derivatives well known in the art.

Similarly, the metal salts of naphthalene sulfonic acids or naphthalene sulfonates are well known materials which are commercially available. Conventionally, such naphthalene sulfonates are alkyl substituted naphthalene sulfonic acid derivatives wherein the alkyl groups have from 8 to about 30 carbon atoms. Thus, for example, suitable naphthalene sulfonates in accordance with the present invention include such materials dioctyl naphthalene sulfonate dinonyl naphthalene sulfonate decyl naphthalene sulfonate dodecyl naphthalene sulfonate tridecyl naphthalene sulfonate tetradecyl naphthalene sulfonate hexadecyl naphthalene sulfonate octadecyl naphthalene sulfonate eicosyl naphthalene sulfonate, etc. 7

As noted previously, the mahogany or naphthalene sulfonates are employed in the novel rust inhibiting composition of the present invention as their metallic salts. In accordance with the present invention, the suitable metals for producing the mahogany or naphthalene sulfonate salts are metals of Groups IIA, IIIA and IVA of the Periodic Table. Specifically preferred metals for the production of the metal salts include barium, calcium, strontium, lead and aluminum.

As indicated above, such metal salts of mahogany and naphthalene sulfonic acids employed in accordance with the present invention are well known and are commercially available. Thus, for example, a suitable mahogany sulfonate comprises Bryton Ba-3ON or Bryton Ca-3ON, respectively being the barium salt and calcium salt of mahogany sulfonate marketed by Bryton Chemical Company, a division of Continental Oil Co. The above terms are trademarks of the Bryton Chemical Co. In addition, a suitable naphthalene sulfonate in accordance with the present invention comprises a material known as NA-SUL-BSN, which is the barium salt of dinonyl naphthalene sulfonate NA-SUL- BSN is a registered trademark for the above identified product which is marketed by the R. T. Vanderbilt Co. Inc.

HIGH FATTY ACID The second component of the novel synergistic rust inhibiting composition of the present invention is a higher fatty acid containing from -60 carbon atoms. Thus, for example, such higher fatty acids include linoleic acid, linolenic acid, ricinoleic acid, palmitic acid, stearic acid, or mixtures thereof. The preferred fatty acid component of the novel synergistic rust inhibiting composition of the present invention comprises the dimer acids which conventionally contain from -60 carbon atoms. A particularly preferred component is dimer acid, adimer of linoleic acid having 36 carbon atoms.

Suitable commercial dimer acids are sold by Emery Industries under the names of Empol 1010 dimer acid containing 97 percent of the dimer of linoleic acid, 3 percent of the trimer of linoleic aicd, and substantially no mono-basic acids. The commercial dimer acids, for example, contain varying amounts of the trimer of linoleic acid and mono-basic acid. Thus, for example, a dimer acid sold as Empol 1022 contains 75 percent of the dimer, 22 percent trimer, and 3 percent mono-basic acids, while Empol 1016 contains 87 percent dimer, 13 percent trimer, with only a trace of mono-basic acids. All such commercial formulations can be advantageously employed in accordance with the present invention,

While the exact structure of the dimer acid produced by the dimerization of linoleic acid is not precisely known, it is hypothesized that the dimer acid has a structural formula as follows:

Typical specifications of a commercial product containing approximately 85 percent of the dimer of linoleic acid, 12 percent of the trim'er of linoleic acid, and about 3 percent of the monomeric acid are as follows:

Viscosity at 100C., centistokes The preparation of such-dimer acid is well known, its preparation being described in the Journal of American Society Oil Chemists, 24, 65 (March, 1947). Again, all such commercial preparations of the dimer acid, as well as the individual components thereof, including all higher fatty acids containing from about 15 to about 60 carbon atoms, can be advantageously employed as a component of the novel synergistic rust inhibiting composition of the present invention.

.In accordance with the present invention, the enhanced rust inhibition associated with the combination of components in accordance with the present invention is achieved when the metal salts of the mahogany or naphthalene sulfonic acid and higher aliphatic carboxylic acid are present in amounts from about 10 to about 90 percent and 90 to about 10 percent by weight, respectively. Preferably the rust inhibiting composition of the present invention containing only the metal salts of the mahogany or naphthalene sulfonic acid and higher aliphatic carboxylic acid contains about 20 to percent by weight of such sulfonate and 80 to 20 percent by weight of the higher aliphatic carboxylic acid, e.g., dimer acid. Of course, the above ranges are only exemplary and slightly higher or lower amounts of the 1 individual components can be employed in accordance with the present invention, it only being necessary that both the metal salts of the mahogany or naphthalene sulfonic acid and higher fatty acid be present in order to achieve the enhanced rust inhibiting action of the compositon of the present invention.

COSOLVENT As indicatedabove, the combination of components,- i.e., metal salt of a mahogany or naphthalene sulfonic acid and higher aliphatic carboxylic acid, is generally employed in the form' of a slushing fluid or oil wherein such components are dissolved in a mineral oil, e.g., paraffinic or naphthenic oil, in the presence of a cosolvent. In accordance with the-present invention, the cosolvent for the metal salt of mahogany or naphthalene sulfonic acid and higher aliphatic carboxylic acid can comprise an aromatic or heterocyclic solvent, or a vari- In addition to the above aromatic and heterocyclic solvents which can be advantageously utilized in accordance with the present invention, a class of well known glycol ethers is particularly adapted for use in accordance with the present invention. Thus, such a preferred class of cosolvents includes the monoand dialkyl ethers of ethylene, diethylene and triethylene glycols and similar propylene glycols wherein the alkyl group contains from I to 6 carbon atoms. Such preferred cosolvents employed in accordance with the present invention are exemplified by ethylene glycol monobutyl ether.

While the above solvents are all suitable in accordance with the present invention, it is pointed out that the above enumerated materials are only exemplary of the cosolvents which can be advantageously utilized. In this regard, any material which acts as a solvent for both the metal salt of the mahogany or naphthalene sulfonic acid and dimer acid can be advantageously utilized in accordance with the present invention and the selection of a proper solvent is governed primarily by such solubility considerations. Accordingly, while the above list is exemplary, it is not in any way meant to embrace all of the conventional solvent materials which can be advantageously utilized in accordance with the rust inhibiting composition of the present invention.

MINERAL OIL As indicated previously, the novel rust inhibiting composition of the present invention is generally employed in the form of a slushing oil or fluid wherein a mineral oil comprises the vehicle therefor. In accordance with the present invention, the mineral oil vehicle may be a paraffinic or naphthenic oil ranging in viscosity from 50 to 300 SUS at 100F. Naphthenic oils are preferred in accordance with the present invention since the metal salt of the mahogany or naphthalene sulfonic acid and higher aliphatic carboxylic acid are more readily soluble in naphthenic type oils.

In addition to the mineral oils of a paraffinic or naphthenic nature, the vehicle in accordance with the present invention can comprise other well known petroleum based oils and lubricants. Thus, for example, the vehicle for the slushing oil or fluid having enhanced rust inhibiting characteristics can comprise a conventional ester type lubricant, silicon oil, etc. Again, however, it is preferred in accordance with the present invention that the vehicle for the slushing oil fluid be a paraffinic or naphthenic oil, preferably a naphthenic oil, ranging in viscosity from 50 to 300 SUS at 100F.

In accordance with the present invention, when the combination of components is employed in a slushing fluid or oil with a cosolvent and a mineral oil vehicle, the amount of the various components are generally as follows:

Component Amount by Weight Metal salt of mahogany sulfonate or In accordance with the present invention, the above In preparing the slushing oil or fluid in accordance with the present invention, no special precautions or proceduresneed be taken in producing the final composition. In this regard, the final composition is generally prepared merely by adding and mixing the metal salt of the mahogany or naphthalene sulfonic acid and higher aliphatic carboxylic acid to the mineral oil vehicle with subsequent addition of the cosolvent, preferably the glycol ether. After a homogeneous solution is prepared by mixing, a final amount of mineral oil is added to the system to bring the same up to the final concentration and to provide the homogeneous mixture having enhanced rust inhibiting characteristics.

As indicated previously, the composition ofthe present invention provides for enhanced or synergistic rust inhibition. Thus, as will be shown hereinafter, the use of the combination of the metal salt of the mahogany or naphthalene sulfonic acid and higher aliphatic carboxylic acid, i.e., dimer acid, provides for a rust inhibition which is greater than would be expected from the rust inhibiting characteristics of the individual components alone. Moreover, since the composition of the present invention acts both as a rust inhibitor and a lubricant, the same is superior to conventional paint rust inhibitors and can be utilized in those environments wherein an iron object is not stationary and wherein due to movement, the same is normally subjected to wear and abrasion. Accordingly, this constitutes a distinct advantage of the novel compositions of the present invention over conventional rust inhibiting compositions.

The novel compositions of the present invention will now be illustrated by reference to the following specific examples. In such examples which are presented for purposes of illustration only, all parts are by weight unless otherwise specified.

EXAMPLE 1 Some 19.98 g. of a 30 percent solution of the barium salt of mahogany sulfonate (Bryton Ba-3ON) in a mineral oil SUS solvent refined naphthenic pale oil) were placed in a 16 oz. widemouth, screw-cap bottle.

Then 6.0 g. of dimer acid (Empol 1022) were added. The mixture was blended until homogeneous. Then 9.0 g. of ethylene glycol monobutyl ether were added and the mixture was blended until homogeneous.

Thereafter 265.0 g. of mineral oil (100 SUS solvent refined naphthenic pale oil) were added. The final mixture was stirred at room temperature giving a homogeneous mixture containing:

2 parts of barium salt of mahogany sulfonate 2 parts of dimer acid 3 parts of ethylene glycol monobutyl. ether 93 parts of mineral oil Rust inhibition was evaluated as follows:

Mild steel panels which conformed to specifications in ASTM D-l748 and which had been cleaned according to the referenced test method, were dipped in the oil solution. They were allowed to drain for 16-24 hours and were then placed in the Q.C.T. cabinet and humidity cabinet to determine the extent of rust protection obtained. Panels remained without rust for 4-5 days in the Q.C.T. cabinet and for more than 100 days in the humidity cabinet without rust.

The individual components, when tested in a like manner, gave significantly less protection as shown in Table 1. It should be noted that in these tests of the individual components, the metal salts were used at even higher concentration than used in the subject composition. It is, accordingly, apparent that the combination of ingredients gives much better performance than the single components.

Table 1 (Rust protection shown by individual components in 100 SUS solvent refined naphthenic pale oil) Additive and Days Protection A homogeneous mixture consisting of 2 percent calcium salt of mahogany sulfonate, Bryton Ca-3ON p 2 percent dimer acid, Empol 1022 3 percent ethylene glycol monobutyl ether 93 percent mineral oil was prepared and tested for rust inhibition in the same manner as described for Example 1. Coated panels remained without rust for 4 days in the Q.C.T. cabinet and for 52 days in the humidity cabinet. Comparing this performance with that of the individual components in Table 1 again shows the superior performance of the combination of ingredients with regard to rust inhibition. 1

EXAMPLE 3 Some 12 g. ofa 50 percent solution of the barium salt of dinonyl naphthalene sulfonate in a mineral oil were placed in a 16 02., wide-mouth, screw-cap bottle.

Then 6 g. of dimer acid (Empol 1022) were added. The mixture was blended until homogeneous. Then 9 g. of ethylene glycol monobutyl ether were added.

Thereafter, 283 g. of 100 SUS solvent refined naphthenic pale oil were added to the mixture. This final mixture was stirred at room temperature giving a homogeneous mixture which contained 2 percent barium salt of dinonyl naphthalene sulfonate 2 percent dimer acid 3 percent ethylene glycol monobutyl ether 92 percent mineral oil Coated panels remained without rust for 3-4 days in the Q.C.T. cabinet and for 108-1 18 days in the humidity cabinet. Comparing this performance with that of the individual components in Table 1 again demonstrates the superior performance of the combination of ingredients.

EXAMPLE 4 Example 1 is repeated except in lieu of the barium salt of mahogany sulfonate as employed in such example, the following metal salts of mahogany or naphthalene sulfonic acids were utilized in substantially the same amounts by weight:

Sr salt of mahogany sulfonate Pb salt of mahogany sulfonate Al salt of mahogany sulfonate Ca salt of dioctyl naphthalene sulfonate Ba salt of dodecyl naphthalene sulfonate Ba salt of tetradecyl naphthalene sulfonate Ca salt of octadecyl naphthalene sulfonate Sr salt of dionyl napt halene' sulfonate Al salt of dinonyl naphthalene sulfonate When slushing oil compositions containing the foregoing metal salts of mahogany or naphthalene sulfonic acids were tested as in Example 1, substantially the same rust inhibiting characteristics were observed.

EXAMPLE 5 EXAMPLE 6 Example 1 is again repeated except that in lieu of the dimer acid, the following higher aliphatic carboxylic.

acids were employed in amounts substantially equivalent by weight:

linoleic acid ricinoleic acid stearic acid dimer of linoleic acid trimer of linoleic acid Again when such slushing oils are tested as in Example l, substantially equivalent'rust inhibition is observed.

EXAMPLE 7 Example 2 was repeated except that the following homogeneous mixtures were prepared:

4 percent calcium salt of mahogany sulfonate, Bryton Ca-3ON 3 percent dimer acid, Empol 1022 2 percent ethylene glycol monobutyl ether 89 percent SUS solvent refined naphthenic pale oil 6 percent calcium salt of mahogany sulfonate, Bryton Ca-3ON 5 percent dimer acid, Empol 1022 9 20 ethylene glycol monobutyl ether 69 percent 100 SUS solvent refined naphthenic pale oil 3 percent calcium salt of mahogany sulfonate, Bryton Ca-3ON 5 percent dimer acid, Empol 1022 5 percent ethylene glycol monobutyl ether 87 percent 100 SUS solvent refined naphthenic pale oil 8 percent calcium salt of mahogany sulfonate, Bryton Ca-3ON 8 percent dimer acid, Empol 1022 2 percent ethylene glycol monobutyl ether 82 percent 100 SUS solvent refined naphthenic pale oil 1 percent calcium salt of mahogany sulfonate, Bryton Ca-3ON 1 percent dimer acid, Empol 1022 5 percent ethylene glycol monobutyl ether 93 percent 100 SUS solvent refined naphthenic pale oil 10 percent salt of mahogany sulfonate, Bryton Ca- 10 percent dimer acid, Empol 1022 30 percent ethylene glycol monobutyl ether 50 percent 100 SUS solvent refined naphthenic pale oil 0.7 percent calcium salt of mahogany sulfonate, Bryton Ca-3ON 1.0 percent dimer acid, Empol 1022 1.0 percent ethylene glycol monobutyl ether 97.3 percent 100 SUS solvent refined naphthenic pale oil The above compositions were tested for rust inhibition as described in Example 1. In all cases, the results were comparable to those set forth in Example 2.

The foregong examples clearly illustrate that the combination of a metal salt of mahogany or naphthalene sulfonic acid and a higher aliphatic carboxylic acid, e.g., dimer acid, provides for enhanced or synergistic results with regard to rust inhibition. In addition, the foregoing examples clearly illustrate that since a mineral oil vehicle is employed, the rust inhibiting composition in the form a slushing oil or fluid possesses both rust inhibiting and lubricating properties. Accordingly, this makes the compositions of the present invention eminently suited for use in those environments wherein the iron object normally subject to rusting is also subjected to wear and abrasion.

While certain preferred embodiments of the present invention have been illustrated by way of specific examples. it should be understood that the present invention is in no way to' be deemed limited thereto, but should be construed as broadly as all and any of the equivalents thereof.

We claim:

1. A rust-inhibiting slushing oil composition compris- A. 0.5 10 percent by weight ofa metal salt of amahogany sulfonate or C alkyl substituted naphthalene sulfonate, said metal being selected from groups IlA, "IA and IVA of the Periodic Table;

B. 0.5 10 percent by weight of a higher aliphatic fatty carboxylic acid of about to 60 carbon atoms and polymers thereof,

C. 0.5 30 percent by weight of a cosolvent for (A) and (B) said solvent being selected from the group consisting of aromatic hydrocarbons, methyl pyrrolidone, tetrahydrofuran, and mono and dialkyl ethers of alkylene glycols and mixtures thereof; and

D. 50 98.5 percent by weight of a mineral oil.

2. The composition of claim 1 wherein said metal is selected from Ba, Ca, Sr, Pb and Al.

3. The composition of claim 2 wherein component (A) is a metal salt of a mahogany sulfonate.

4. The composition of claim 2 wherein component (A) is a metal salt of a C alkyl naphthalene sulfonate.

5. The composition ofclaim 4 wherein said C alkyl naphthalene sulfonate is dinonyl naphthalene sulfonate.

6. The composition of claim 1 wherein said higher aliphatic carboxylic acid is a dimer acid.

7. The composition of claim 6 wherein said dimer acid is a dimer of linoleic acid.

8. The composition of claim 1 wherein said cosolvent is a monoor dialkyl ether of ethylene glycol wherein the alkyl group contains from l-6 carbon atoms.

9. The composition of claim 8 wherein said cosolvent is ethylene glycol monobutyl ether.

10. The composition of claim 1 wherein said mineral oil is selected from paraffinic and naphthenic oils having a viscosity of 50 to 300 SUS at 100F.

11. The composition of claim 1 wherein said components (A), (.B), (C) and (D) are present in the follow ing amounts:

A. 2 6 percent by weight B. 2 6 percent by weight C. 3 18 percent by weight D. 93 percent by weight.

12. A rust-inhibiting additive composition comprising:

A. a metal salt of a mahogany sulfonate or C alkyl substituted naphthalene sulfonate, said metal being selected from groups IIA, "IA and IVA of the periodic table; and B. a higher aliphatic fatty carboxylic acid of about 15 to about 60 carbon atoms and polymers thereof said components (A) and (B) being present in amounts of from about 10 to about percent by weight and about 90 to about 10 percent by weight respectively.

13. The composition of claim 12 wherein said metal is selected from Ba, Ca, Sr, Pb and Al.

14. The composition of claim 13 wherein component (A) is a metal salt of a mahogany sulfonate.

15. The composition of claim 13 wherein component (A) is a metal salt of a C840 alkyl naphthalene sulfonate.

16. The composition of claim 15 wherein said C alkyl naphthalene sulfonate is dinonyl naphthalene sulfonate.

17. The composition of claim 12 wherein said higher aliphatic carboxylic acid is a dimer acid.

18. The composition of claim 17 wherein said dimer acid is a dimer of linoleic acid.

19. A rust inhibiting slushing oil composition comprising 2 percent by weight of the barium salt of mahogany sulfonate, 2 percent by weight of a dimer of linoleic acid, 3 percent of ethylene glycol monobutyl ether, and 93 percent by weight of a mineral oil. 

1. A RUST-INHIBITING SLUSHING OIL CMPOSITION COMPRISING: A. 0.5 - 10 PERCENT BY WEIGHT OF A METAL SALT OF A MAHOGANY SULFONATE ORR C8-30 ALKYL SUBSTITUTED NAPHTHALENE SULFONATE SAID METAL BEING SELECTED FROM GROUPS IIA, IIIA, AND IVA OF THE PERIODIC TABLE: B. 0.5 - 10 PERCENT BY WEIGHT OF A HIGHER APLIPHATIC FATTY CARBOXYLIC ACID OF ABOUT 15 TO 60 CARBON ATOMS AND POLYMERS THEREOF; C. 0.5 - 30 PERCENT BY WEIGHT OF A COSOLVENT FOR (A) AND (B) SAID SOLVENT BEING SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBONS, METHYL PYRROLIDONE, TETRAHYDROFURAN, AND MONO AND DIALKYL ETHER OF ALKYLENE GLYCOLS AND MIXTURES THEREOF; AND D. 50 - 98.5 PERCENT BY WEIGHT OF A MINERAL OIL.
 2. The composition of claim 1 wherein said metal is selected from Ba, Ca, Sr, Pb and Al.
 3. The composition of claim 2 wherein component (A) is a metal salt of a mahogany sulfonate.
 4. The composition of claim 2 wherein component (A) is a metal salt of a C8-30 alkyl naphthalene sulfonate.
 5. The composition of claim 4 wherein said C8-30 alkyl naphthalene sulfonate is dinonyl naphthalene sulfonate.
 6. The composition of claim 1 wherein said higher aliphatic carboxylic acid is a dimer acid.
 7. The composition of claim 6 wherein said dimer acid is a dimer of linoleic acid.
 8. The composition of claim 1 wherein said cosolvent is a mono-or dialkyl ether of ethylene glycol wherein the alkyl group contains from 1-6 carbon atoms.
 9. The composition of claim 8 wherein said cosolvent is ethylene glycol monobutyl ether.
 10. The composition of claim 1 wherein said mineral oil is selected from paraffinic and naphthenic oils having a viscosity of 50 to 300 SUS at 100*F.
 11. The composition of claim 1 wherein said components (A), (B), (C) and (D) are present in the following amounts: A. 2 - 6 percent by weight B. 2 - 6 percent by weight C. 3 - 18 percent by weight D. 70 - 93 percent by weight.
 12. A rust-inhibiting additive composition comprising: A. a metal salt of a mahogany sulfonate or C8-30 alkyl substituted naphthalene sulfonate, said metal being selected from groups IIA, IIIA and IVA of the periodic table; and B. a higher aliphatic fatty carboxylic acid of about 15 to about 60 carbon atoms and polymers thereof said components (A) and (B) being present in amounts of from about 10 to about 90 percent by weight and about 90 to about 10 percent by weight respectively.
 13. The composition of claim 12 wherein said metal is selected from Ba, Ca, Sr, Pb and Al.
 14. The composition of claim 13 wherein component (A) is a metal salt of a mahogany sulfonate.
 15. The composition of claim 13 wherein component (A) is a metal salt of a C8-30 alkyl naphthalene sulfonate.
 16. The compOsition of claim 15 wherein said C8-30 alkyl naphthalene sulfonate is dinonyl naphthalene sulfonate.
 17. The composition of claim 12 wherein said higher aliphatic carboxylic acid is a dimer acid.
 18. The composition of claim 17 wherein said dimer acid is a dimer of linoleic acid.
 19. A rust inhibiting slushing oil composition comprising 2 percent by weight of the barium salt of mahogany sulfonate, 2 percent by weight of a dimer of linoleic acid, 3 percent of ethylene glycol monobutyl ether, and 93 percent by weight of a mineral oil. 